Related by context. Frequent words. (Click for all words.) 71 aggravate asthma 67 lung irritant 67 asthma bronchitis 67 bronchitis asthma 65 asthma chronic bronchitis 63 bronchitis pneumonia 63 respiratory irritant 62 coughing shortness 61 pneumonia bronchitis 61 Nitrogen oxides 60 wheezing shortness 60 trigger allergic reactions 60 convulsions coma 60 smog acid 59 Viral infections 59 Prolonged exposure 59 Volatile organic compounds 59 commercializes innovative biopharmaceuticals 59 chronic bronchitis emphysema 59 Diesel exhaust 59 arterial infections endocarditis 58 osteoporosis arthritis 58 coughing wheezing 58 inflammatory bowel 58 lung cancer mesothelioma 58 chronic obstructive lung 57 animal dander 57 respiratory 57 headaches dizziness nausea 57 Prenatal exposure 57 dehydration abdominal pain 57 Hydrogen sulfide 57 diarrhea stomach cramps 57 mold fungi 56 Particulates 56 fatigue shortness 56 asthma allergies 56 seizures coma 56 asthma emphysema 56 carbon disulfide 56 Nitrogen dioxide 55 chronic respiratory 55 Parkinson disease multiple sclerosis 55 neck stiffness disorientation 55 clog arteries 55 methemoglobinemia 55 cramps heat exhaustion 55 Ultraviolet light 55 angina chest 55 allergies asthma 55 smoker inhales 55 Nausea vomiting 55 chronic sinus 54 encephalitis inflammation 54 BioMarin develops 54 airway constriction 54 Particle pollution 54 neurovascular diseases 54 postnasal drip 54 Pulmonary hypertension 54 Genetic mutations 54 meningitis encephalitis 54 eczema psoriasis 54 multiple sclerosis Parkinson disease 54 asthma eczema 54 cancer inflammation autoimmune 54 lung diseases 54 fine particulates 53 Hyperthyroidism 53 deplete oxygen 53 Thoroughly cooking 53 Acid reflux 53 rhythm disturbances 53 cataracts glaucoma 53 lung cancer emphysema 53 headache sore throat 53 cerebrovascular diseases 53 pulmonary disorders 53 Chronic obstructive pulmonary 53 meningitis pneumonia 53 Chronic inflammation 53 uremia 53 Bacterial infections 53 headache nausea vomiting 53 airborne particulate matter 53 Particulate matter 53 Parkinson disease Alzheimer disease 52 chronic relapsing 52 mental retardation cerebral palsy 52 respiratory ailments 52 arthritis gout 52 ozone smog 52 untreated sleep apnea 52 soft whitish 52 Congenital heart 52 heart arrhythmias 52 nausea constipation 52 kidneys lungs 52 Atopic dermatitis 52 Dust mites 52 bones joints